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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Steady Subsonic flows in High Dimensional Nozzle
高维喷管 稳态 亚音速流动
2023/11/15
In this talk, we present our result on subsonic irrotational flows in a multi-dimensional (n>1) infinitely long nozzle with variable cross sections. The flow is described by the inviscid potential equ...
Characterization of an Effervescent Atomization Water Mist Nozzle and Its Fire Suppression Tests
Effervescent atomization Two-phase flow Water mist Fire suppression
2015/8/10
A gas-outside-liquid-inside water mist nozzle based on effervescent atomization technology is designed, characterized and tested in this paper. The droplets size distribution and velocity under differ...
Numerical Analysis of Nozzle Clearance’s Effect on Turbine Performance
nozzle clearance variable nozzle turbine (VNT) mixed flow turbine
2011/8/4
Variable nozzle turbine (VNT) has become a popular variable geometry turbine (VGT) technology for the diesel engine application. Nozzle clearance, which can’t be avoided on the hub and shroud side of ...
Characterization of an effervescent atomization water mist nozzle and its fire suppression tests
Effervescent atomization Two-phase flow Water mist Fire suppression
2015/8/10
A gas-outside-liquid-inside water mist nozzle based on effervescent atomization technology is designed,characterized and tested in this paper. The droplets size distribution, velocity under different ...
Numerical Analysis of Nozzle Clearance’s Effect on Turbine Performance
nozzle clearance variable nozzle turbine (VNT) mixed flow turbine
2011/8/4
Variable nozzle turbine (VNT) has become a popular variable geometry turbine (VGT) technology for the diesel engine application. Nozzle clearance, which can’t be avoided on the hub and shroud side of ...
Fundamental Study of Extendible Nozzle and Dual-Bell Nozzle for Reusable Rocket Engine
Extendible Nozzle Dual-Bell Nozzle Reusable Rocket Engine
2009/8/19
An extendible nozzle and a dual-bell nozzle are considered to be feasible devices to improve performance of booster engines for near future reusable launch vehicles. Hot firing tests were conducted at...
Supersonic COIL with Nozzle Bank Based on Trip-Jet Mixing System
Ejector Trip Oxygen iodine laser
2009/6/1
Nozzle banks for an ejector-chemical oxygen-iodine laser consisting of two-dimensional slit nozzles with a trip-jet mixing system were tested in the cold- and hot-flow operation regimes. Horizontal Pi...
静电喷头雾化特性预测模型（Prediction Model for Atomization Performance of Electrostatic Spraying Nozzle）
静电喷头 雾化性能 预测模型
2009/5/22
将一种基于改进粒子群优化最小二乘支持向量机的预测模型引入静电喷雾雾化性能预测领域，并给出了相应的步骤和算法。该模型能方便地预测喷雾参数对喷头雾化性能的影响，有助于正确认识喷头雾化性能随喷雾参数的变化规律。通过具体实例及与其他几种预测方法的对比表明，在相同样本条件下，其模型构造速度比标准LS-SVM方法高近1个数量级，模型预测误差约为标准LS-SVM方法的50%，预测精度比常规BP模型高1个数量级。
Benefit of Dual Nozzle Flow Dyeing Machine for Polyester Micro Fiber Fabrics
Polyester micro fiber fabrics Flow dyeing machine Nozzle pressure
2009/4/21
It is important for researchers developing dyeing technology to improve the dyeing techniques of polyester micro fiber fabrics in terms of the time efficiency. The empirical observations have led to ...
Study on Pneumatic Weft Insertion Behavior in Main Nozzle
weft insertions unsteady flow pull force main nozzle testing
2009/2/16
In this paper, with the aim of analysis, the main nozzle was divided into four part (tubes). This allowed to analyse detailed airflow parameters of each tube, and introduce a method of experiment to t...
Thermal wall influence on the behavior of axisymmetric laminar compressible flow in nozzle
compressible Mac-Cormack scheme nozzle numerical study viscous flow wall
2010/3/11
The present work concerns a numerical study of an axisymmetric laminar flow of a compressible gas in a small size convergent-divergent nozzle. The geometry and the reservoir conditions are such that t...
Air flow through an ejector with annular supersonic nozzle
Ejector annular nozzle supersonic flow copper
2010/3/15
During development of the continuous production of copper dried concentrate and fluxes were injected through the top-blowing lance into the molten bath. The properties of the equipment designed were d...